Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!ucsfcgl!cca.ucsf.edu!root From: root@cca.ucsf.edu (Systems Staff) Newsgroups: comp.graphics Subject: Re: Gray levels and color Summary: Maybe he matched the film ... Keywords: color gray Message-ID: <2207@ucsfcca.ucsf.edu> Date: 14 Jul 89 23:54:01 GMT References: <20722@hodge.UUCP> Organization: Computer Center, UCSF Lines: 28 In article <20722@hodge.UUCP>, jdm@hodge.UUCP (jdm) writes: > > In a company I onced worked for there was a guy who could > look at a black and white photograph of a prinited circuit board > and read the color codes on the resistors, capacitors, wires, etc. > ... > I could not read them with 100% accuracy like > this guy could. > ... > It turned out that this guy was color blind in such a way that > he could see colors in levels of gray. It seems quite possible that his spectral sensitivity curve was a reasonable match for that of the film being used so the picture was pretty much what he ordinarily saw. That would account for his (effortless?) accuracy. Thos Sumner Internet: thos@cca.ucsf.edu (The I.G.) UUCP: ...ucbvax!ucsfcgl!cca.ucsf!thos BITNET: thos@ucsfcca U.S. Mail: Thos Sumner, Computer Center, Rm U-76, UCSF San Francisco, CA 94143-0704 USA OS|2 -- an Operating System for puppets. #include